
Professional Backflow Testing in Western Washington
Sound Backflow Testing delivers expert backflow assembly testing to guarantee your water system meets safety standards and regulatory compliance.
What is Backflow Testing?
Backflow testing ensures that a backflow assembly is functioning properly to prevent a backflow event. Backflow is the undesirable reversal of water flow in a pipe, and can result in the contamination or pollution of the water supply.
- Required by state law under WAC 246-290-490
- Required when a backflow assembly is installed, repaired, or relocated, and annually thereafter
- Performed by state-certified Backflow Assembly Tester
- Most commonly found on irrigation systems and boilers
- Failure to comply may result in water service termination, fines, and misdemeanor penalties

Reliable Backflow Testing to Protect Your Water Supply
Explore our expert testing services designed to keep your water system safe and compliant.
Backflow Assembly Inspection
Comprehensive inspections to ensure your backflow assemblies meet safety standards.

Regulatory Compliance Testing
Certified testing services that guarantee adherence to local water regulations.

Maintenance and Repair Services
Expert maintenance to keep your backflow devices functioning efficiently and safely.

Our Testing Process
Discover how our expert backflow assembly testing ensures your water systems stay safe and compliant.
Step One: Schedule Your Test
Contact us to arrange a convenient time for our certified technicians to assess your backflow assemblies.
Step Two: Professional Inspection
Our team conducts thorough testing to identify any issues and verify compliance with safety standards.
Step Three: Receive Certification
After successful testing, receive official documentation confirming your system meets all regulatory requirements.
Ensure Safe Water with Expert Backflow Testing
Schedule your backflow assembly testing easily with clear steps and all essential information to complete your appointment.

Professional Backflow Assembly Testing You Can Trust
Reach out to Sound Backflow Testing with our complete contact details, including office locations, phone lines, and email, to get expert support and answers to your questions.
Phone: (425) 647-7987
Email: contact@soundbackflowtesting.com
